static int read_file(struct ausrc_st *st)
{
struct mbuf *mb;
int err;
for (;;) {
mb = mbuf_alloc(4096);
if (!mb)
return ENOMEM;
mb->end = mb->size;
err = aufile_read(st->aufile, mb->buf, &mb->end);
if (err)
break;
if (mb->end == 0) {
info("aufile: end of file\n");
break;
}
aubuf_append(st->aubuf, mb);
mb = mem_deref(mb);
}
info("aufile: loaded %zu bytes\n", aubuf_cur_size(st->aubuf));
mem_deref(mb);
return err;
}
static int read_file(struct ausrc_st *st)
{
struct mbuf *mb;
int err;
for (;;) {
uint16_t *sampv;
size_t i;
mb = mbuf_alloc(4096);
if (!mb)
return ENOMEM;
mb->end = mb->size;
err = aufile_read(st->aufile, mb->buf, &mb->end);
if (err)
break;
if (mb->end == 0) {
info("aufile: end of file\n");
break;
}
/* convert from Little-Endian to Native-Endian */
sampv = (void *)mb->buf;
for (i=0; i<mb->end/2; i++) {
sampv[i] = sys_ltohs(sampv[i]);
}
aubuf_append(st->aubuf, mb);
mb = mem_deref(mb);
}
info("aufile: loaded %zu bytes\n", aubuf_cur_size(st->aubuf));
mem_deref(mb);
return err;
}
static inline int decode(struct ausrc_st *st)
{
int err, ch, encoding;
struct mbuf *mb;
long srate;
mb = mbuf_alloc(4096);
if (!mb)
return ENOMEM;
err = mpg123_read(st->mp3, mb->buf, mb->size, &mb->end);
switch (err) {
case MPG123_NEW_FORMAT:
mpg123_getformat(st->mp3, &srate, &ch, &encoding);
info("rst: new format: %i hz, %i ch, encoding 0x%04x\n",
srate, ch, encoding);
/*@fallthrough@*/
case MPG123_OK:
case MPG123_NEED_MORE:
if (mb->end == 0)
break;
aubuf_append(st->aubuf, mb);
break;
default:
warning("rst: mpg123_read error: %s\n",
mpg123_plain_strerror(err));
break;
}
mem_deref(mb);
return err;
}